C1 Opportunities and Risks Unit 1.4

Earthquake often occurs at __________ boundaries.

• Convergent

• Divergent

• Transform

• Transparent

How does an earthquake occur?

Reorder the following:

• Energy releases

• when pressure exceeds the strength of the rock

• pressure builds up

• Plates move

• rock breaks

Label the followings correctly.​ ​

c

d

e

a

Seismic waves

Fault

Epicenter

Fault scrap

Focus

Volcanic Eruptions are most likely to happen at ____ boundaries. (Choose more than 1 answers)

• convergent

• divergent

• transform

• transparent

Scientists call the pattern of volcanoes around the Pacific Ocean, "___."

• Ring of Fire

• Alpine-Himalayan Belt

• The Circum Belt

• Ring of Snow

At ________ plate boundary, the magma rises and pushes the plates apart.

1. Repeated cooling and solidification of magma from volcano, submarine volcano and volcanic island. 

2. Is the statement correct?

• Yes

• No

What is a tsunami?

• when land falls from a hill or cliff

• large ocean waves

• magma coming from underground

• a form of precipitation

What are most tsunamis caused by?

• Drought

• wind and the gravitational pull of the moon.

• Tornadoes

• underwater disturbances such as earthquakes, landslides, and volcanic eruptions.